Loans and Card Member Receivables (Details 4) account in Thousands, $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($) account	Mar. 31, 2021 USD ($) account
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	34	46
Account Balances \| $	$ 349	$ 412
Card Member Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	27	38
Account Balances \| $	$ 177	$ 287
Average Interest Rate Reduction (as a percentage)	14.00%	13.00%
Card Member Receivables
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	6	7
Account Balances \| $	$ 171	$ 117
Average Payment Term Extension (in months)	17 months	18 months
Other Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	1	1
Account Balances \| $	$ 1	$ 8
Average Interest Rate Reduction (as a percentage)	2.00%	3.00%
Average Payment Term Extension (in months)	15 months	15 months

The average basis point reduction in interest rate by class of Financial Instrument

No definition available.

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- Definition

The average period for payment term extension for cardmember receivables modified in a TDR.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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- Details

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Namespace Prefix:
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- Details

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